Question

Say you have a large PHP project and suddenly, when attempting to run it, you just end up with a blank page. The script terminates and you want to find exactly where that is with as little effort as possible.

Is there a tool/program/command/IDE that can, on PHP script termination, tell you the location of a script exit?

Note: I can’t mark my own post as ‘accepted answer’ so look at the bottom to see my solution. If you come up with a better solution I will mark your post as the answer.

Answer 1

With some inspiration from the nonworking but still right-direction answer from RoBorg, I used the following code in the beginning:

function shutdown() {     global $dbg_stack_a;     print_r($dbg_stack_a); } register_shutdown_function('shutdown'); 

And then I made a global conditional breakpoint (global = breakpoint is evaluated on each row), exploiting the fact that it can run code trough eval(), with the following ‘condition’:

eval(' global $dbg_stack_a, $dbg_stack_b, $dbg_stack_c; $dbg_stack_a = $dbg_stack_b; $dbg_stack_b = $dbg_stack_c; $dbg_stack_c = debug_backtrace(); return false; ') 

Probably not fast but does the trick! Using this I was able to determine the exact file and line location that raised die(). (This example works in NuSphere.)